Diodes Incorporated SBR30A120CTFP

Overview

SBR30A120CTFP from Diodes Incorporated is a 30A dual common-cathode Super Barrier Rectifier in ITO-220AB package, rated for 120V peak reverse voltage, 0.78V typical forward voltage at 15A/25°C, and 175°C maximum junction temperature-designed for high-efficiency AC/DC secondary-side rectification in server power supplies and telecom rectifiers.

For engineers reviewing the SBR30A120CTFP datasheet, SBR30A120CTFP pinout, SBR30A120CTFP application, or SBR30A120CTFP equivalent, key selection criteria include soft-switching behavior, thermal resistance (4°C/W junction-to-case), leakage current ≤20μA at 125°C, and RoHS-compliant green molding compound compatibility with automated reflow and heatsink mounting.

Technical Context

This dual-diode rectifier integrates two independent SBR (Super Barrier Rectifier) die in a single ITO-220AB thermally enhanced package, sharing a common cathode terminal. Its patented barrier structure enables lower forward voltage than Schottky diodes while maintaining superior high-temperature leakage performance compared to standard PN junction rectifiers.

The device operates up to 175°C junction temperature with 250A non-repetitive surge rating and supports capacitance-loaded circuits when derated by 20%. Isolation voltage of 2000VAC (terminal-to-heatsink) confirms suitability for isolated secondary-side layouts requiring reinforced insulation.

Key Specifications

Pinout & Package

Package: ITO-220AB - thermally optimized variant of TO-220 with insulated tab enabling direct heatsink mounting without insulating washer; 1.65g mass; UL 94V-0 molded plastic body; matte tin-plated copper leadframe.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current, high-temperature rectifier applications.

Compared with VS-30CPH12, SBR30A120CTFP offers 0.04V lower VF and integrated insulation but trades 1.5°C/W higher thermal resistance; versus MUR30120CT, it delivers 58% lower conduction loss at 15A yet targets fundamentally different system positions-secondary rectification rather than primary-side snubbing.

Availability

SBR30A120CTFP is available at Aetrix Electronics and suitable for server power supplies, telecom rectifiers, industrial motor drives, and LED streetlight drivers requiring stable component supply across multi-year production cycles.

Supply support for SBR30A120CTFP includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

This device belongs to Diodes' SBR® Super Barrier Rectifier product line, engineered specifically to replace Schottky diodes in high-current, high-temperature secondary-side rectification where low VF and stable leakage are jointly required.

FAQ

What is the difference between SBR30A120CTFP and SBR30A120CT?

The SBR30A120CTFP uses the ITO-220AB package with insulated tab for direct heatsink mounting and 2000VAC isolation, whereas the SBR30A120CT uses standard TO-220AB without insulation. Both share identical electrical specs, but the FP suffix denotes the insulated variant required for reinforced insulation schemes in safety-critical secondary-side layouts.

Can SBR30A120CTFP be used in place of a standard Schottky rectifier?

Yes-its 0.78V VF at 15A matches or exceeds most 120V Schottky diodes, while offering superior high-temperature leakage performance (20μA at 125°C vs. >100μA typical for Schottkys). It is a drop-in replacement in terms of pinout and voltage rating, but thermal design must account for its 4°C/W RθJC versus lower values in some Schottky packages.

Is the "Green" designation verified and compliant with specific standards?

Yes-the SBR30A120CTFP meets Diodes Incorporated's internal "Green" definition: <900ppm bromine, <900ppm chlorine (<1500ppm total Br+Cl), and <1000ppm antimony compounds. It is also RoHS 2 (2011/65/EU) compliant with all applicable exemptions applied, and certified per IPC-1752A Class 1 material declarations.

Does this part require a thermal pad or insulator when mounted to a heatsink?

No-ITO-220AB has an electrically insulated metal tab, allowing direct mechanical and thermal contact to the heatsink without additional insulators. This eliminates thermal interface resistance from mica or silicone pads and simplifies assembly, provided mechanical torque and flatness tolerances per AP02002 are observed.